|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||Elastic Properties of High-entropy Alloys from First-principles
||Wei Chen, Haoyan Diao, Peter Liaw
|On-Site Speaker (Planned)
The material-design strategy of combining multiple elements in near-equimolar ratios has spearheaded the emergence of high-entropy alloys (HEAs), an exciting class of materials with exceptional engineering properties. Elastic properties are important criteria for engineering material design. The elastic constants of a material provide a complete description of the response of the material to external stresses in the elastic limit, which provides fundamental insight into the nature of bonding in the material, and is known to correlate with many mechanical properties. We employed first-principles approaches to study the elastic properties of prototype HEA systems, such as Al0.3CrFeCoNi. Computed elastic constant results from Special Quasi-random Structures (SQS) and Coherent Potential Approximations (CPA) will be compared with experimental results. We will also evaluate the validity of a previously developed statistical learning model of elastic constants for HEA systems. The effects of HEA compositions on the elastic properties and phase stability will be discussed.
||Planned: Supplemental Proceedings volume